Panasonic
RS-232 Protocol
for LCD Projector
9
9
3.2 Replies
When commands are sent to projector, the projector will respond in the following manner.
1) Normal command receiving
When the command is in the proper format and correct communications has been established
between the controlling device and the projector, the projector will reply with the response
information.
2) Command receiving error (NO Response)
If no response is transmitted from the projector, then check the communication settings and the
cable configuration. The command string m ust start with a [STX] Start of Text message. This
will alert the projector to start receiving commands. An [ETX] End of Text message must end
the command string or the projector will not execute the command.
3) Command Receiving Error [STX]ER401[ETX]
If this error is transmitted from the projector, the projector did not recognize the command that
was sent from the control device. Check the command list to ensure that the command is valid,
and the characters are capitalized.
4) Command Receiving Error [STX]ER402[ETX
If this command is transmitted from the projector, the projector did not recognize the parameter
that was sent from the control device. Check the command list for the appropriate parameter
data that is to be sent with the appropriate command to the projector.
5) Query Reponses
If a command such as [STX]Q$L[ETX] Query Lamp Operation Time is sent. The projector will
send the reply of [STX]Q$L:0000[ETX]. Parameter information will be replied only in the case of
a Question type command. Check the com mand list for the specific information.
Example of Commands sent to the Projector.
[STX]IIS:RGB1[ETX]
[STX]IIS[ETX]
Controller
Projector
After IIS Command
has Executed
